Mr. Drummond and Dr. Arthur Harmon. He was really funny on
Maude, always getting in little digs at "Maudie" even though he obviously liked her a lot. RIP.
He's survived by his twin brother Bonar Bain, who had a hilarious appearance on SCTV as Conrad's fictional twin, "Hank Bain"; IIRC Hank was under alien mind-control to take over the station.